code: def rename_component_from_root(state, old_name, new_name):
      """Rename keys from state using full python paths"""
      return rename_state_keys(
          state,
          "^" + old_name.replace(".", r"\.") + ".?(.*)$",
          new_name + r".\1",
      )
  
imports: import re
  from typing import List, Optional
  import torch
  from pytext.utils.usage import log_class_usage
  from pytorch.text.fb.nn.modules.transformer import Transformer
  from torch import nn
label_desc: Use image node_id 3 for calling a global function with example usage: rename_component_from_root(state, old_name, new_name) and returns: rename_state_keys